Results 11 to 20 of about 623,839 (308)

Are Constants Constant?

open access: yesPolylinguality and Transcultural Practices, 2019
The boundaries of the artwork visibly change the perception of the seemingly unshakable physical laws. For example, the works of writers of the beginning and end of the twentieth century, who created samples of the so-called.
Anna V. Podobriy   +2 more
doaj   +3 more sources

Accurate determination of terahertz optical constants by vector network analyzer of Fabry-Perot response [PDF]

open access: yes, 2013
This paper was published in Optics Letters and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://dx.doi.org/10.1364/OL.38.005438.
Wang, X   +4 more
core   +5 more sources

Why is Kemeny’s constant a constant? [PDF]

open access: yesJournal of Applied Probability, 2018
Abstract In their 1960 book on finite Markov chains, Kemeny and Snell established that a certain sum is invariant. The value of this sum has become known as Kemeny’s constant. Various proofs have been given over time, some more technical than others.
Bini, Dario   +4 more
openaire   +4 more sources

Alpha: A Constant That Is Not a Constant? [PDF]

open access: yes, 2006
We review the observational information on the constancy of the fine structure constant alpha. We find that small improvements on the measurement of ^{187}Re lifetime can provide significant progress in exploring the range of variability suggested by QSO data. We also discuss the effects of a time varying alpha on stellar structure and evolution.
Fiorentini, G., Ricci, B.
openaire   +2 more sources

Cosmological constant as a fundamental constant⋆ [PDF]

open access: yesThe European Physical Journal Plus, 2019
Eur Phys J Plus, to appear, 5 ...
Gurzadyan, V. G., Stepanian, A.
openaire   +2 more sources

Determination of the spring constants of the higher flexural modes of microcantilever sensors [PDF]

open access: yes, 2013
Funding: University of St Andrews.A method for the simultaneous calibration of the spring constants of all flexural modes of microcantilevers is presented. It is based on a flow of gas from a microchannel that interacts with the microcantilever.
Hähner, Georg, Parkin, John David
core   +1 more source

Calibration of the torsional and lateral spring constants of cantilever sensors [PDF]

open access: yes, 2014
Financial support from the EPSRC (EP/K000411/1) and the University of St. Andrews under an Impact Acceleration Account (EP/K503940/1) are gratefully acknowledged.A method suitable for the calibration of the spring constants of all torsional and lateral ...
Hähner, Georg, Parkin, John David
core   +1 more source

Understanding the logical constants and dispositions [PDF]

open access: yes, 2009
Many philosophers claim that understanding a logical constant (e.g. ‘if, then’) fundamentally consists in having dispositions to infer according to the logical rules (e.g. Modus Ponens) that fix its meaning.
Besson, Corine   +2 more
core   +1 more source

On the Khintchine constant [PDF]

open access: yesMathematics of Computation, 1997
Summary: We present rapidly converging series for the Khintchine constant and for general ``Khintchine means'' of continued fractions. We show that each of these constants can be cast in terms of an efficient free-parameter series, each series involving values of the Riemann zeta function, rationals, and logarithms of rationals.
Bailey, David H.   +2 more
openaire   +3 more sources

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